Hi Paul,
Believe it or not, they are the Tyco W31 series breaker switches.....only flush mounted..... I laid out the hole pattern I wanted on the instrument panel. I then bent a piece of 0.063 aluminum 90 degrees to make a doubler for the bottom if the IP. I clamped and match drilled through both pieces. I then installed the switches with nuts to the doubler behind the IP and bolted this assembly to the lower lip of the IP. Hopefully you can see it in the attached photo, it was rather simple to do.